The mission concentrated on supporting the Patriarch, and the education of Assyrian clerics and laity, including the founding of a college for priests, and 45 schools in Mesopotamia.
[4] Wigram served as a teacher at a school in Van, eventually rising to lead the mission for the last five years of his service, ending in 1912.
Wigram was awarded a Lambeth degree in 1910 by Archbishop Randall Davidson and in the same year published The Assyrian Church, 100–640 AD.
In 1914, based on his mission-related travels, he published (with his brother Edgar) The Cradle of Mankind; Life in Eastern Kurdistan, an anecdotal progression through the region.
He was co-opted to advise on the resettlement of Assyrians after the war; following which he was appointed chaplain to the British Legation in Greece from 1922 to 1926, and as a canon in St Paul's Church[which?]